text.skipToContent text.skipToNavigation
Product Variant Information section
Product Specification Section
Pricing Section

Stock: 0

On Order: 0
Factory Stock:Factory Stock: 0
Factory Lead Time: 20 Weeks
Minimum Order: 1,960
Multiple Of: 98
Quantity Web Price
98 $2.33
196 $1.45
392 $1.36
490 $1.33
1,470+ $1.21


Attributes Table
Interface I2C
Supply Voltage-Nom 2.7V to 5.5V
Temperature Grade Industrial
Features and Applications

The ISL12008IB8Z is a low power real time clock with battery reseal function, available in surface mount SOIC-8 package.

This device provides power-fail indicator, software alarm and intelligent battery backup and uses an external, low-cost 32.768 kHz crystal. The real time clock tracks time with separate registers for hours, minutes, and seconds.


  • Pin Compatible to ST M41T00S and Maxim DS1340
  • Functionality Equivalent to ST M41T00S and Maxim DS1340
  • Real Time Clock/Calendar
    • Tracks Time in Hours, Minutes, Seconds and Sub-seconds
    • Day of the Week, Day, Month, and Year
  • 512 Hz Frequency Outputs for On-Chip Crystal Compensation
  • Software Alarm
    • Settable to the Second, Minute, Hour, Day of the Week, Day, or Month
  • Automatic Low-Drop Battery Switch for Longest Backup Life
  • Power Failure Detection
  • Battery ReSeal™ for Long Shelf Life
  • I2C Bus™
    • 400 kHz Data Transfer Rate
  • 800 nA Battery Supply Current
  • Small Package Option
    • 8 Ld SOIC
  • Pb-Free (RoHS Compliant)


  • Utility Meters
  • HVAC Equipment
  • Audio/Video Components
  • Set-Top Box/Television
  • Modems
  • Network Routers, Hubs, Switches, Bridges
  • Cellular Infrastructure Equipment